68 lines
1.8 KiB
Rust
68 lines
1.8 KiB
Rust
use serde::{Deserialize, Serialize};
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use crate::{
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error::{RuntimeError, SyntaxError, ValidationError},
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AbstractTree, Context, Format, SyntaxNode, Type, Value,
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};
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#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq, PartialOrd, Ord)]
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pub enum MathOperator {
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Add,
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Subtract,
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Multiply,
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Divide,
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Modulo,
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}
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impl AbstractTree for MathOperator {
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fn from_syntax(
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node: SyntaxNode,
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_source: &str,
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_context: &Context,
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) -> Result<Self, SyntaxError> {
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let operator_node = node.child(0).unwrap();
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let operator = match operator_node.kind() {
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"+" => MathOperator::Add,
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"-" => MathOperator::Subtract,
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"*" => MathOperator::Multiply,
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"/" => MathOperator::Divide,
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"%" => MathOperator::Modulo,
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_ => {
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return Err(SyntaxError::UnexpectedSyntaxNode {
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expected: "+, -, *, / or %".to_string(),
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actual: operator_node.kind().to_string(),
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position: node.range().into(),
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})
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}
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};
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Ok(operator)
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}
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fn expected_type(&self, _context: &Context) -> Result<Type, ValidationError> {
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Ok(Type::None)
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}
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fn validate(&self, _source: &str, _context: &Context) -> Result<(), ValidationError> {
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Ok(())
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}
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fn run(&self, _source: &str, _context: &Context) -> Result<Value, RuntimeError> {
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Ok(Value::none())
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}
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}
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impl Format for MathOperator {
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fn format(&self, output: &mut String, _indent_level: u8) {
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let char = match self {
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MathOperator::Add => '+',
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MathOperator::Subtract => '-',
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MathOperator::Multiply => '*',
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MathOperator::Divide => '/',
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MathOperator::Modulo => '%',
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};
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output.push(char);
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}
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}
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